| River Pairs | Answer | % Correct |
|---|---|---|
| Hinterrhein | Rhine | 90%
|
| Marañón River | Amazon River | 81%
|
| Alaknanda River | Ganges | 81%
|
| Gallatin River | Missouri River | 81%
|
| Allegheny River | Ohio River | 62%
|
| Biała Wisełka | Vistula | 57%
|
| Batang River | Yangtze | 57%
|
| Breg | Danube | 52%
|
| Paranaíba River | Paraná River | 52%
|
| Euphrates | Shatt al-Arab | 48%
|
| Biya | Ob | 19%
|
| Crocodile River | Limpopo River | 10%
|